Consider the circuit in Fig. P6.51 with the base voltage VB obtained using a voltage divider across the 5-V supply. Assuming the transistor β to be very large (i. e., ignoring the base current), design the voltage divider to obtain VB = 1.5 V. Design for a 0.1-mA current in the voltage divider. Now, if the BJT β = 100, analyze the circuit to determine the collector current and the collector voltage.

Apump is used to circulate hot water in a home heating system. water enters the well-insulated pump operating at steady state at a rate of 0.42 gal/min. the inlet pressure and temperature are 14.7 lbf/in.2, and 180°f, respectively; at the exit the pressure is 60 lbf/in.2 the pump requires 1/15 hp of power input. water can be modeled as an incompressible substance with constant density of 60.58 lb/ft3 and constant specific heat of 1 btu/lb or. neglecting kinetic and potential energy effects, determine the temperature change, in °r, as the water flows through the pump.

Give heat transfer applications for the following, (i) gas turbines (propulsion) ) gas turbines (power generation). (iii) steam turbines. (iv) combined heat and power (chp). (v) automotive engines

The higher the astm grain-size number, the coarser the grain is. a)-true b)-false